1)o ring Quick supply 2)Different colors and sizes 3)Good quality, best price 4) ... ,HNBR,EPDM,SILICONE,VITON,NR,FLS,FFPM,PU,PTFE etc.2) High temperature and acid-alkali resistance, anti-aging, no poison ... /UPS/TNT-express fee will be born by the buyer;2)Large quantity, sea/air freightDelivery Time15 days after confirmation of ...